kojic acid
Also known as: 2-(hydroxymethyl)-5-hydroxy-4H-pyran-4-one, 2-HYDROXYMETHYL-5-HYDROXY-4-PYRONE, 2-Hydroxymethyl-5-hydroxy-γ-pyrone, 3-hydroxy-6-hydroxymethyl-4H-pyran-4-one, 4H-PYRAN-4-ONE,5-HYDROXY-2-(HYDROXYMETHYL), 4H-Pyran-4-one, 5-hydroxy-2-(hydroxymethyl)-, 4H-Pyran-4-one,5-hydroxy-2-(hydroxymethyl)-, 5-Hydroxy-2-(hydroxymethyl)-4-pyrone, 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one, 5-Hydroxy-2-(hydroxymethyl)-γ-pyrone, 5-Hydroxy-2-hydroxymethyl-4H-4-pyranone, 5-hydroxy-2-(hydroxmetyl)-4H-pyran-4-one, 5-hydroxy-2-(hydroxymethyl)-4h-pyran-4-on, 5-hydroxy-2-(hydroxymethyl)pyran-4-one, EINECS 207-922-4, Kojic acid, MFCD00006580, Pyran-4-one, 5-hydroxy-2-(hydroxymethyl), UNII-6K23F1TT52, kojic
kojic acid (CAS 501-30-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H6O4 and a molecular weight of 142.11 g/mol. Key properties include a melting point of 152-155 °C(lit.), a boiling point of 401.7±45.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 179.9±22.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 501-30-4
- Jingsj CID
- J-45282-1
- Molecular Formula
- C6H6O4
- Molecular Weight
- 142.11 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 152-155 °C(lit.) |
|---|---|
| Boiling Point | 401.7±45.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 179.9±22.2 °C |
| Exact Mass | 142.026611 |
| PSA | 70.67000 |
| LogP | -0.64 |
| Vapor Pressure | 0.0±2.1 mmHg at 25°C |
| Refractive Index | 1.607 |
| Additional Property | SOLUBLE |
Activity & Biological Data
| Additional Information | [1]. Wei X, et al. Kojic acid inhibits senescence of human corneal endothelial cells via NF-κB and p21 signaling pathways. Exp Eye Res. 2018 Dec 28;180:174-183. |
|---|
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of kojic acid?
The CAS number of kojic acid is 501-30-4.
What are the molecular formula and molecular weight of kojic acid?
kojic acid has molecular formula C6H6O4 and molecular weight 142.11 g/mol.
What are the upstream and downstream products of kojic acid?
For kojic acid, Upstream Products: 2-(chloromethyl)-5-hydroxy-4H-pyran-4-one, D-(+)-Xylose, L-(+)-Arabinose; Downstream Products: Pyromeconic acid, 5-Hydroxy-2-(hydroxymethyl)pyridin-4(1H)-one, 2,3-dihydro[1,4]dioxino[2,3-c]pyridine-7-carbaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "kojic acid (CAS 501-30-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45282-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.